Which of these would react with CrO3? A OD О в O A OC and D Ос O A, C and D B ОН с D ОН -CH3

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### Question 5

Which of these would react with CrO₃?

**Chemical Structures:**

- **A**: Cyclohexanone (a six-membered ring with a ketone group)
- **B**: Cyclohexanone with an ester group at the carbonyl position
- **C**: Cyclohexanol (a six-membered ring with an alcohol group)
- **D**: Methylcyclohexanol (a six-membered ring with an alcohol group and a methyl group)

**Answer Choices:**

- ○ D
- ○ B
- ○ A
- ○ C and D
- ○ C
- ○ A, C and D

**Explanation:**

Chromium trioxide (CrO₃) is an oxidizing agent commonly used to oxidize alcohols to ketones or aldehydes. Options C and D contain alcohol groups, which can be oxidized by CrO₃. Option D has a secondary alcohol, which is oxidized to a ketone, while option C has a primary alcohol that can be oxidized to an aldehyde or further to a carboxylic acid. Options A and B contain carbonyl groups and are not alcohols, thus they are less reactive with CrO₃ for oxidation purposes. Therefore, the reactive compounds are typically C and D.
Transcribed Image Text:### Question 5 Which of these would react with CrO₃? **Chemical Structures:** - **A**: Cyclohexanone (a six-membered ring with a ketone group) - **B**: Cyclohexanone with an ester group at the carbonyl position - **C**: Cyclohexanol (a six-membered ring with an alcohol group) - **D**: Methylcyclohexanol (a six-membered ring with an alcohol group and a methyl group) **Answer Choices:** - ○ D - ○ B - ○ A - ○ C and D - ○ C - ○ A, C and D **Explanation:** Chromium trioxide (CrO₃) is an oxidizing agent commonly used to oxidize alcohols to ketones or aldehydes. Options C and D contain alcohol groups, which can be oxidized by CrO₃. Option D has a secondary alcohol, which is oxidized to a ketone, while option C has a primary alcohol that can be oxidized to an aldehyde or further to a carboxylic acid. Options A and B contain carbonyl groups and are not alcohols, thus they are less reactive with CrO₃ for oxidation purposes. Therefore, the reactive compounds are typically C and D.
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